Do You Ever Use Two Or More Devices For Navigation? (If So, Why And When?)

Bdhsfz6 reminded me of something my wife and I did a number of years ago when we brought our oldest son from Minnesota to Swannanoa, North Carolina for college. I had a Garmin GPS with me, but we also used Google Maps on a smartphone. I probably drove a bit more than my wife did, but we did take turns driving. I asked her to compare routes when we started and from time to time during the trip. If both devices agreed on a route, we were probably fine. However, when they didn't agree with one another, that is when we dug a bit deeper to find out why they didn't agree with each other.

Since that time, I now have Garmins with traffic. And Google Maps, Apple Maps, Waze and others have certainly matured since then. (Apple Maps came out in September 2012 and I would not have had an iPhone anyway.)

(My Ram 1500 has Tom Tom based navigation in dash. I am underwhelmed. I have been using my Garmin DriveSmart 65 with Amazon Alexa to compare side-by-side. I am also tempted to use a device with Open Street Maps to see how it compares.)

One of the biggest benefits on lengthy trips for my wife and I, particularly when we are travelling in our RV, is to keep one device simply navigating and keeping us on track. (The driver can focus on that.) The passenger can then use the second device, be it GPS or smartphone, to find fuel stops ahead, fuel prices, determine if these stops are "RV friendly", etc.

For my fellow members here that use two (or more) devices for navigation, how do you use them?